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Alpha-Aminobutyric Acid, Vitreous Fluid — Substance Concentration

Published: August 9, 2026Updated: August 16, 2026

Measures the concentration of alpha-aminobutyric acid, an amino acid, in vitreous fluid, the clear liquid inside the eye.

Quick summary

["This specialized eye-fluid test measures alpha-aminobutyric acid and is interpreted alongside the results of the eye examination."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
32224-8
Short code
A-Aminobutyr Vitf-sCnc
Synonyms
A-Aminobutyr Vitf-sCnc
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What is this test?

This test measures alpha-aminobutyric acid in vitreous fluid, the clear liquid that fills the inside of the eye. Alpha-aminobutyric acid is an amino acid involved in cellular metabolism.

Why might I need this test?

This is a specialized test that may be considered in selected cases involving eye disease, inflammation, or suspected problems with eye-fluid chemistry. It is not commonly used as a routine screening test.

How is the test performed?

A small sample of vitreous fluid is collected by an eye specialist, usually during a procedure called a vitreous tap. The laboratory then measures the amount of alpha-aminobutyric acid in the fluid.

How do I prepare for the test?

Preparation depends on the eye procedure being performed. Follow your ophthalmologist's instructions, including any medication or fasting directions, and tell the care team about eye infections, recent surgery, or allergies.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Alpha-Aminobutyric acid, vitreous fluid

Frequently asked questions

Is a vitreous tap painful?
A vitreous tap can cause pressure or discomfort during the procedure, but clinicians generally use local anesthetic and provide other appropriate comfort measures. Your ophthalmologist will explain the risks and benefits before the procedure.
Why is this result not compared with a standard blood range?
Vitreous fluid is a specialized specimen, so interpretation may depend on the eye condition, sampling method, and laboratory method. The laboratory and eye specialist determine whether the result is meaningful in your clinical situation.
Can this test diagnose an eye disease by itself?
No. This measurement is only one part of the evaluation and is generally considered with the eye examination, medical history, and other laboratory or imaging findings.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy